#175777
Closest named color: Deep Sea Blue (#015482). oklch(43.3% 0.082 235.5), rgb(23, 87, 119).
Aa
White text reads best on this color (7.87:1).
About this color
#175777 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.082 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.024 away. White text reads best on it, at 7.87:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #175777 |
| RGB | rgb(23, 87, 119) |
| HSL | hsl(200, 68%, 28%) |
| OKLCH | oklch(43.3% 0.082 235.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #175777 | 7.87:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #175777 | 2.66:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #175777 text on white | 7.87:1 | AAA | Lc 87.0 | Fine for body text |
| #175777 text on black | 2.66:1 | Fails | Lc -15.1 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#71A9CA
oklch(70.8% 0.076 235.2)
-
Step 500
500
#4792BC
oklch(63% 0.098 235.8)
-
Step 600
600
#237CA8
oklch(55.6% 0.105 235.4)
-
Step 700
700
#136890
oklch(49% 0.098 235.6)
-
Step 800
800 (this color)
#175777
oklch(43.3% 0.082 235.5)
-
Step 900
900
#1A475F
oklch(37.9% 0.064 235.4)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#175777 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #475778 | 0.048 |
| Deuteranopia (no green cones) | #3B4E76 | 0.040 |
| Tritanopia (no blue cones) | #005F62 | 0.050 |
| Achromatopsia (no color) | #515151 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175777
#175777
oklch(43.3% 0.082 235.5)
- #724320
#724320
oklch(43.2% 0.081 55.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #175777, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.024
- Light Navy #155084 ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.036
- Petrol #005F6A ΔE 0.039
- YInMn Blue #415A77 ΔE 0.042
- Dusk Blue #26538D ΔE 0.043
- Deep Teal #00555A ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.058
Use #175777 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.